Why Does Gravity Rule? By Frank Close — $21.99 on Amazon If you enjoyed this extract, the rest of the book builds on this brief history of magnetism and delves ever deeper into the subatomic ...

Magnets aren't attracted to copper, but when the two come together they can appear to defy gravity. Download the Magnetic Copper PDF (384 Kb). Adobe Acrobat is required. SAFETY: Neodymium magnets ...

This swirling protoplanetary disk was filled with ionized gas which interacted with the nascent star in important magnetic ...